How serious are these kind of errors?
Got POLLERR on non-socket fd 173 (getsockopt errno=9) Got POLLERR on non-socket fd 197 (getsockopt errno=9) Got POLLERR on non-socket fd 99 (getsockopt errno=9) Got POLLERR on non-socket fd 92 (getsockopt errno=9) Got POLLERR on non-socket fd 174 (getsockopt errno=9) Got POLLERR on non-socket fd 70 (getsockopt errno=9) Got POLLERR on non-socket fd 58 (getsockopt errno=9) Got POLLERR on non-socket fd 159 (getsockopt errno=9)